[RDX]

After precipitating platinum using KCl I'm left with a solution of platinum potassium chloride. I'm going to guess I need to evaporate this and then mix some solvent in to separate the potassium chloride from the platinum..but what solvent, is the question, I guess. Could anyone help me learn?

[kriggy]

I dont know what is the procedure, but I think that you dont have mixture of KCl + Pt but rather some compound like K₂PtCl₄. According to wikipedia, adding alcohol and base causes the reduction of Pt²⁺ to Pt⁰ that should be insoluble in alcohol.